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©
2014
congatec
AG
TS87m13
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PDS
Pull-down strap. A module output pin that is either tied to GND or is not connected. Used to signal module
capabilities (pinout type) to the Carrier Board.
9.1
A-B Connector Signal Descriptions
Table 5
Intel
®
High Definition Audio Link Signals Descriptions
Signal
Pin #
Description
I/O
PU/PD Comment
AC/HDA_RST#
A30
Intel
®
High Definition Audio Reset:
This signal is the master hardware reset to
external codec(s).
O 3.3VSB
AC’97 codecs are not supported.
AC/HDA_SYNC
A29
Intel
®
High Definition Audio Sync:
This signal is a 48 kHz fixed rate sample
sync to the codec(s). It is also used to encode the stream number.
O 3.3VSB
PU 1K
3.3VSB
AC’97 codecs are not supported.
AC/HDA_SYNC is a boot strap signal
(see note below)
AC/HDA_BITCLK
A32
Intel
®
High Definition Audio Bit Clock Output:
This signal is a 24.000MHz
serial data clock generated by the Intel
®
High Definition Audio controller.
O 3.3VSB
AC’97 codecs are not supported.
AC/HDA_SDOUT
A33
Intel
®
High Definition Audio Serial Data Out:
This signal is the serial TDM data
output to the codec(s). This serial output is double-pumped for a bit rate of
48 Mb/s for Intel
®
High Definition Audio.
O 3.3VSB
PU 1K
3.3VSB
AC’97 codecs are not supported.
AC/HDA_SDOUT is a boot strap
signal (see note below)
AC/HDA_SDIN[2:0] B28-B30
Intel
®
High Definition Audio Serial Data In [0]:
These signals are serial TDM
data inputs from the three codecs. The serial input is single-pumped for a bit
rate of 24 Mb/s for Intel
®
High Definition Audio.
I 3.3VSB
AC’97 codecs are not supported.
Note
Some signals have special functionality during the reset process. They may bootstrap some basic important functions of the module.
For more information refer to section 9.5 of this user’s guide.
